JPH02261776A - Device for winding collecting fibrous filament into flatness - Google Patents

Abstract

PURPOSE:To broaden a collecting fiber and wind it flatwise by setting up a roll between a pair of traverses with a harness cord space in a traverse member, and three rolls, at top, middle and bottom, in a lower part of the traverse member respectively, while setting the top and bottom down to a convex roll, the middle to a concave roll, and pressing a mandrel to the lower roll. CONSTITUTION:A collecting fibrous filament (a) led into a harness cord space between rolls 4a and 4b for a pair of traverses comes to a parallel state flately in the said space along the longitudinal direction, and when it is transferred along an upper convex roll 6 at the lower part, each fibrous filament is dispersed in the axial direction of the roll by a circular bulged curved face 6a of this roll. Then, it is transferred along a middle concave roll 7 at the lower part, through which a dispersal range of the filament (a) is narrowed by the circular recess-in curved face 7a, and thereby unevenness of dispersal spaces of each fiber by the roll 6 is corrected, thus it is transferred toward a convex roll 8 in the lower part and the filament (a) is dispersed an a uniform space in the cross direction by a circular bulged curved face 8a of the said roll again, whereby it is made into a flat tape form and wound on a mandrel 9.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for winding a fiber strip sent out in a bundle onto a mandrel in a wide flat state.

(Prior art) Recently, high-performance fibers such as carbon fibers, ceramic fibers, and Kevlar fibers have been used to improve the strength of structures.
When winding, etc., it is required to make the fibers as thin as possible, flat and wide as possible to improve production efficiency. It was difficult to disperse the fibers in a wide width state because they were offset in the direction.

(Problems to be Solved by the Invention) Therefore, it has not been possible to continuously feed out these aggregated fibers, make them wide and thinly flatten them, and traverse them on a mandrel and continuously wind them up.

(Means for Solving the Problems) In view of the above, the present invention provides a device that traverses the fibers sent out in a gathered state in a thin and flat manner over a wide width and continuously winds them around a mandrel while minimizing damage to the fibers. A traverse member is provided with a traverse member that is provided to perform reciprocating motion of a predetermined length along the axial direction of a yarn winding mandrel, and a pair of rolls are arranged so that their generatrix lines are parallel to each other and that the traverse direction is parallel to the traverse member between the two rolls. A traverse roll is provided which is rotatably supported together with a right-angled threading interval between the aggregated fibers, and three rolls are sequentially arranged below the traverse roll along the transport direction of the aggregated fibers. The lowermost roll is supported in a fixed or rotatable manner, and the lowermost roll is pressed against a mandrel, and the aggregated fibers introduced from above within the threading interval of the traverse roll are sequentially passed along the surfaces of the three rolls, alternately on the opposite side. The winding is performed from the lowest roll to a mandrel that is in contact with the lowermost roll while being refracted and passed through.The mandrel is arranged so that it rotates away from the lowermost roll as the winding diameter increases. Claim 1 provides that each of the rolls is a convex roll with the middle of the roll generatrix bulging into an arcuate curved surface, and the intermediate roll is a concave roll with the middle of the generatrix being concave in the arcuate curved surface. The upper convex roll and the lower convex roll are spherical rolls with at least a portion of a spherical surface, and are fixed or rotatable, respectively;
Furthermore, the center of the upper spherical roll is displaced in the traverse direction from directly below the yarn threading interval of the upper traverse roll, and the upper convex roll and intermediate concave roll according to claim 1 or the upper part according to claim 2 are further provided. It is characterized in that the spherical roll is provided so as to be displaceable in a direction perpendicular to the traverse direction.

(Operation) In the apparatus of the present invention according to claim 1, as shown in FIGS. 1 to 5, the traverse roll (4) is formed from the guide roll (1) through the dancer roll (2).
Gathered fiber strip a introduced from above into the yarn threading interval (5) formed between the parallel generating lines of the pair of rolls (4a) (4b)
is traversed by the traverse action of the traverse member (3), and each single fiber of the aggregated fiber strip is spread out in its length direction within a threading interval (5) perpendicular to the traverse direction, and then in a direction perpendicular to the traverse direction. The fibers spread out are bent so as to be moved from the front surface of the upper convex roll (6) pivotally supported below, to the back surface of the intermediate concave roll (D), and further in contact with the front surface of the lower convex roll (8), respectively. After that, the convex roll (
The traverse roll (4a) is wound around the mandrel (9) which is in contact with the traverse roll (4a ) (4b) through the thread threading interval (5)
As shown, each fiber a spread in the length direction of the interval is pulled downward by the winding operation of the mandrel (9), and is sequentially pulled downward from the fibers at the end of the spread row by the upper convex roll (6).
), but since the fibers tend to be transported along the shortest path due to the winding tension and move in the direction of least resistance, the fibers move toward the smaller diameter side of the bulge curved surface. Pulled downward, the next fibers also move sequentially to the smaller diameter side, so each fiber in the spread row forms a bulge curved surface (6a) as shown in Figure B, due to the difference in the front and back of the fibers in contact with the bulge curved surface (6a). (6a) Spread upward.

Since there are no particular restrictions on the spreading of the fibers by the upper convex roll (6), the density of the spread is uneven and non-uniform depending on various conditions, so these fibers are transferred along the lower concave roll (7). The concave curved surface (7a) pulls the spread fibers toward the center, thereby correcting their irregularities and aligning them to a uniform arrangement density as shown in C in the same figure. ) and the roll (
8) along the arcuate bulging curved surface (8a), the rolls are immediately spread out in an even array in the width direction on the bulging curved surface (8a) as shown in the same figure by the same operation as the upper convex roll (6). The mandrel (9) is used to wind the yarn. At this time, the lower convex roll (8) acts as a roller veil in a conventional winding machine by traversing along the package surface. Since the contact area is small, the rotational resistance of the mandrel is significantly lower than that of conventional roller bales, and damage to the winding layer surface due to contact with the winding layer surface is also reduced.

In the above winding device, each roll (6) in the upper and lower three stages
(7) In (8), it is possible to transport the fiber strips a along each curved surface with the rolls fixed, or each roll may be rotatably supported by friction with the fiber strips a. Compared to the former, the latter rotation type has less frictional resistance against the fibers, so the fibers run more smoothly and are less likely to be damaged.

In addition, in the above device, the upper convex roll <6) and the lower convex roll (8) may be fixed or rotatably provided instead of the spherical roll 00 having at least a portion of the spherical surface (10a). The spreading operation is performed smoothly, and the spherical roll (10 is displaced in the traverse direction with respect to the position directly below the yarn threading interval (5) of the upper traverse roll (4) as shown in Figure 1O). When installing it, even if it is fixed or rotating, the fibers a spread out through the threading interval (5) contact the spherical surface (10a) from an oblique angle, as shown in the operation diagram of FIG. The spread of fiber a at (Oa) is as shown in FIG.
Compared to the method in which the spread fibers a that have passed through step 5) are brought into contact with a convex curved surface from a direction perpendicular to the surface, the fibers a can be spread more smoothly.

The upper convex roll (6) and its concave roll (7) in the above, or the spherical roll (IO) replaced with the upper roll (6)
The spread width of each single fiber a is varied by changing the bending degree of the transported fiber strip by adjusting the displacement in the direction perpendicular to the traverse direction, for example, by increasing the bending degree, the spread width of each fiber is expanded, The spread width can be adjusted narrowly by decreasing the degree of curvature.

(Example) Embodiments of the invention will now be described with reference to the drawings.

1 to 5 show an embodiment of the basic device of the present invention as set forth in claim 1, in which the aggregate fibers a are attached to a guide roll (1).
from the dancer roll (2) to the traverse part It (
Threading interval (5) of the upper traverse roll (4) in 3)
), and the traverse member (3) is given a reciprocating motion of a predetermined width by a rotation interlocking mechanism (3a) such as a known scroll cam.

The traverse roll (4) in the illustrated example uses a pair of conical rolls (4a) (4b), whose generatrix lines are parallel to each other at right angles to the traverse direction, and a path through which the aggregated fiber strip a can pass between them. Thread spacing (5) was formed.

(6) (7) (8) is the traverse roll (4)
Three rolls are rotatably supported below with their axes along the traverse direction, and each of the upper and lower rolls (6) and (8) has an arcuate curved surface in the middle of the generatrix. The middle roll (r) is a concave roll with the middle of the generatrix recessed into an arcuate curved surface.
The mandrel (9) which is in contact with the fiber (8) is rotated in a direction away from the roll (8) as the winding diameter increases, and the fiber is introduced into the threading interval (5). The fibers in the aggregated fiber strip a tend to spread out in the length direction of the interval (5) and then move in contact with the front surface of the convex roll (6) below, but at this time, the fibers tend to spread out in the length direction of the interval (5). 5
) Although there is a risk of escaping from inside to the front, as mentioned above, 1
When using a pair of conical rolls (4a) (4b),
As the fibers in contact with this are guided toward the larger diameter side, the above-mentioned escape can be prevented. In some cases, a pair of straight rolls having an appropriate length is used in consideration of fiber escape, as shown by the dotted line in FIG. 6.

In the above device, as shown in FIG. 6A to A,
The aggregated fiber strips a guided within the thread passing interval (5) between the pair of traverse rolls (4a) (4b) are flat and parallel in the length direction within the interval, and this is caused by the lower part. When transported along the upper convex roll (6), each fiber thread is spread out in the width direction, that is, in the axial direction of the roll, by the arcuate curved surface (6a) of the roll, and then the fiber thread a spreads out in the lower middle concave shape. By transporting the fibers along the roll (7), the spread width of the fibers a is narrowed by the arcuate concave curved surface (7a) of the roll (7), and the uneven spread interval of each fiber by the upper convex roll (6) is reduced. By correcting the alignment and transferring it toward the lower convex roll (8), the fiber strips a are again spread out at equal intervals in the width direction by the arcuate bulging curved surface (8a) of the roll, and this spread makes them flattened. Wind it up on a mandrel (9) as a tape.

Next, FIGS. 7 and 10 show an example in which a spherical roll (IO) is used in place of the upper convex roll (6) in the embodiment of claim 1, and the spherical roll (IG is shown in FIG. 9). It has a spherical surface (10a) at least in part, as shown in FIG.
The spherical surface (10a) is positioned opposite to the upper yarn threading interval (5) and the lower middle concave roll (7), and is fixed or rotatably supported on the traverse member (3) by the shaft piece (10b). However, the sphere itself may be used without cutting it, as shown by the phantom lines in FIG. Figures 7 and 8 show the case where the spherical roll (iG) is fixed to the traverse member (3) with the shaft piece (10b) perpendicular to the traverse direction and the shaft piece (10a) perpendicular to the traverse direction. 10 and 11 show a case in which the spherical roll (IO) is rotatably supported, but the shaft piece (10b) does not necessarily have to be perpendicular to the traverse direction, and can be supported by the shaft piece in the traverse direction. It's okay.

In addition, in FIG. 10 and FIG. 11, the rotatably supported spherical roll (IO) is the spherical roll (IO) with the center of the spherical roll (IG shifted to the right with respect to the position directly below the upper yarn threading interval (5)). By providing this, the spread fibers a that have passed through the threading interval (5) are rolled into a spherical roll (I
The case is shown in which the spread fibers a are spread on the spherical surface (10a) on the diagonal front surface of O, that is, the spread fibers a after passing through the threading interval (5) are spread at an angle of approximately 45@twisting.
It can be set by the amount of deviation of IO.

In this case, the spherical roll GO may be fixed at an offset position, or, although not shown, the lower convex roll (8) may be rotatably provided as a spherical roll (IG) in the apparatus of the embodiment.

Further, as shown in Fig. 4, there is an upper convex roll (6), a concave roll (n) below it, and a spherical roll (IG) shown in Figs. The spread width of the fibers can be adjusted by changing the degree of bending between the rolls and varying the tension of the fiber strip a.

(Effects of the Invention) According to the present invention, a pair of traverse rolls having thread threading intervals are provided in the traverse member, and three rolls, upper, middle, and lower, are disposed below the traverse member, and each of the upper and lower rolls is formed into a convex shape. The mandrel was provided as a roll or a spherical roll, and the intermediate roll was a concave roll and was pressed against the lower roll or the spherical roll so that the mandrel could be rotated in the direction of separation.
The aggregated fibers that are wound while in contact with the upper, middle, and lower rolls are expanded in the axial direction at the curved surface of each roll by the arcuate curved surfaces of the upper, middle, and lower rolls, and then narrowed, and are finally made into a predetermined wide and flat tape-like fiber. It can be wound up as an assembly from a lower roll onto a mandrel, and furthermore, by adjusting the installation position of each roll other than the lower convex roll or spherical roll back and forth, the spread width of the fiber strip can be varied; Further, by displacing the spherical roll located at the upper part from a position directly below the thread passing interval, it is possible to spread out the fibers even more smoothly.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the winding device, FIG. 2 is a side view, FIG. 3 is an enlarged front view of the main parts, and FIG. 5 is a partial plan view, FIG. 6 is a diagram showing the fiber spreading operation, FIG. 7 is a front view of the main part showing another embodiment, FIG. 8 is a side view of the same, and FIG. 9 is a diagram showing the fiber spreading operation. FIG. 10 is a perspective view showing an example of a spherical roll, FIG. 1O is a front view of main parts showing still another embodiment, FIG. 11 is a side view of the same, and FIG. 12 is a diagram showing the fiber spreading operation. (1)...Guide roll (2)...Dancer roll (3)...Traverse member (4)...Roll for traverse (5)...Threading interval (6)...
Upper convex roll (6a)... Arc-shaped bulging curved surface (7>
... Intermediate concave roll (7a) ... Arc-shaped four-person curved surface
(8)... Lower convex roll (8a)... Arc-shaped bulging curved surface (9)... Mandrel aO... Spherical roll
(10a)...Spherical time Applicant: Kozu Seisakusho Co., Ltd. Subject of procedural amendment amendment 1998 Drawing 7゜Contents of amendment

Claims (1)

[Claims] 1. A traverse member provided to perform reciprocating motion of a predetermined length along the axial direction of the yarn winding mandrel;
A traverse roll is provided in which a pair of rolls are rotatably supported with their generatrix parallel to each other and with a threading interval of the aggregated fibers perpendicular to the traverse direction formed between the two rolls,
Below that, three rolls are sequentially arranged along the transport direction of the aggregate fiber strips, and these are fixedly or rotatably supported, and the lowest roll is pressed against a mandrel so that the traverse roll passes from above. The aggregated fibers introduced into the yarn interval are sequentially refracted and passed to the opposite side along the three roll surfaces, and are wound from the lowest roll onto a mandrel that is in contact with this, and the mandrel increases the winding diameter. The rolls are arranged so that they rotate away from the bottom roll according to the
The upper and lower rolls are each a convex roll with the middle of the roll generatrix bulging into an arcuate curved surface, and the middle roll is a concave roll with the middle of the generatrix being recessed into an arcuate curved surface. A device that winds up flat. 2. A device for winding a wide bundle of fibers, characterized in that the upper and lower convex rolls according to claim 1 are spherical rolls each having at least a portion of a spherical surface, and are fixed or rotatable. 3. An apparatus for winding a fiber aggregate into a wide flat shape according to claim 2, characterized in that the center of the upper spherical roll is displaced in the traverse direction from directly below the yarn threading interval of the upper traverse roll. 4. A wide flat aggregate fiber strip characterized in that the upper convex roll and the intermediate concave roll according to claim 1 or the upper spherical roll according to claim 2 are provided so as to be displaceable in a direction perpendicular to the traverse direction. Winding device.